cool down. oklahoma city, only 79 degrees thunderstorms out there prepared for the first time in july, the temperature did not reach 100 degrees in oklahoma city. but look at the heat index. it feels like it is 107 in dallas, texas. the heat advisory is over a wide range of the country. you can get an idea of fact -- that wind. the dry air really, zen and it should be firing at an afternoon thunderstorm. that is by late tomorrow afternoon. after that, try arabic, and that is when the rushing air comes in at -- that dry air comes in and that is when the professional air,. it will be humid tomorrow morning. temperatures into the 70's, soaring into the low 90's.